2018

7.2

2006

6.5

2012

9.7

2009

4.7

2015

7.6

2005

6.8

2014

5.3

2013

7.0

2013

5.5

2016

7.1

2017

7.5

2020

6.4

1934

6.9

1997

5.9

2014

7.7

2017

5.9

2004

5.3

2006

4.9

2015

6.7

1985

5.4